--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django/contrib/auth/decorators.py	Wed Jun 02 18:57:35 2010 +0200
@@ -0,0 +1,52 @@
+try:
+    from functools import update_wrapper, wraps
+except ImportError:
+    from django.utils.functional import update_wrapper, wraps  # Python 2.4 fallback.
+
+from django.contrib.auth import REDIRECT_FIELD_NAME
+from django.http import HttpResponseRedirect
+from django.utils.decorators import available_attrs
+from django.utils.http import urlquote
+
+
+def user_passes_test(test_func, login_url=None, redirect_field_name=REDIRECT_FIELD_NAME):
+    """
+    Decorator for views that checks that the user passes the given test,
+    redirecting to the log-in page if necessary. The test should be a callable
+    that takes the user object and returns True if the user passes.
+    """
+    if not login_url:
+        from django.conf import settings
+        login_url = settings.LOGIN_URL
+
+    def decorator(view_func):
+        def _wrapped_view(request, *args, **kwargs):
+            if test_func(request.user):
+                return view_func(request, *args, **kwargs)
+            path = urlquote(request.get_full_path())
+            tup = login_url, redirect_field_name, path
+            return HttpResponseRedirect('%s?%s=%s' % tup)
+        return wraps(view_func, assigned=available_attrs(view_func))(_wrapped_view)
+    return decorator
+
+
+def login_required(function=None, redirect_field_name=REDIRECT_FIELD_NAME):
+    """
+    Decorator for views that checks that the user is logged in, redirecting
+    to the log-in page if necessary.
+    """
+    actual_decorator = user_passes_test(
+        lambda u: u.is_authenticated(),
+        redirect_field_name=redirect_field_name
+    )
+    if function:
+        return actual_decorator(function)
+    return actual_decorator
+
+
+def permission_required(perm, login_url=None):
+    """
+    Decorator for views that checks whether a user has a particular permission
+    enabled, redirecting to the log-in page if necessary.
+    """
+    return user_passes_test(lambda u: u.has_perm(perm), login_url=login_url)